Thank you, guest-lajsnij: That's correct. Musical notation is a symbolic representation of tones on a scale that has to be mapped to an instrument. Dr Feaster has found examples that correspond seemingly more directly to intended sounds, and thus his approach of digitally mapping seems to play out, pun intended.

It's musical notation, but you couldn't convert regular modern musical notation into audio this way. That picture shown up at the top could be played by importing it into standard software for making sounds out of images because the curves just follow what the sound is supposed to be.